Gear shift push-pull cable and automobile

Abstract

The present invention discloses a shift push-pull cable, including a mounting frame, a piston and a cable; a receiving chamber is provided in the mounting frame; the piston is slidably arranged in the receiving chamber, and a liquid storage chamber for accommodating hydraulic oil is isolated in the receiving chamber; a section of the cable is passed through the first end of the mounting frame, and one end of the cable is connected to one of the multiple pistons close to the first end, and the other end is used to connect to the transmission shift rocker arm; another section of the cable is passed through the second end of the mounting frame, and one end of the cable is connected to one of the multiple pistons close to the second end, and the other end is used to connect to the shift rocker arm of the shifter; and a car is also disclosed, including the above-mentioned shift push-pull cable. The synchronization of the movement of the two sections of the cable is ensured by the hydraulic oil and the piston in the receiving chamber, so as to avoid the failure to engage the gear due to the asynchronous movement of the two sections of the cable; the two-way transmission of vibration between the shifter and the transmission is realized; the vibration of the high-frequency low pair will be converted into the heat energy of the hydraulic oil, thereby isolating the transmission of vibration and noise, and optimizing the shifting feel.

Description

Technical Field

[0001] The invention belongs to the field of automobiles, and in particular relates to a shift push-pull cable and an automobile. Background Art

[0002] At present, the shift control system adopts a mechanical shift cable to transmit the force and stroke transmitted by the driver through the shifter; the mechanical shift cable includes a mounting plate, a cable protection tube mounted on the mounting plate, and a cable core wire passing through the tube cavity of the cable protection tube. The cable core wire can slide back and forth freely in the cable protection tube, and the two ends of the cable core wire are respectively connected to the transmission shift rocker arm and the shifter shift rocker arm; the mechanical shift cable has the following disadvantages:

[0003] The vibration generated by the power output of the powertrain will be transmitted from the transmission shift rocker arm to the shift rocker arm of the shifter through the cable core wire, causing the driver to be troubled by the vibration and noise of the shift handle, affecting the customer's commercial experience of the entire vehicle. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to provide a shift push-pull cable and a car in view of the problem that the vibration of the power assembly of the existing solution is transmitted to the driver through the shift push-pull cable.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a shift push-pull cable, comprising a mounting frame, a piston and a cable;

[0006] The installation frame is provided with a receiving cavity;

[0007] A plurality of pistons are slidably disposed in the accommodating cavity, and a liquid storage cavity for accommodating hydraulic oil is isolated in the accommodating cavity;

[0008] One section of the cable is passed through the first end of the mounting frame, and another section of the cable is passed through the second end of the mounting frame;

[0009] One end of the cable passing through the first end is located in the accommodating cavity and connected to one of the plurality of pistons close to the first end, and the other end is located outside the accommodating cavity and used to connect to a transmission shift rocker arm;

[0010] One end of the cable passing through the second end is located in the accommodating cavity and connected to one of the multiple pistons close to the second end, and the other end is located outside the accommodating cavity and is used to connect to the shift rocker arm of the shifter.

[0011] Optionally, the cable includes a protective tube and a core wire;

[0012] One end of the protective tube is arranged at the corresponding end of the mounting frame and connected to the cavity wall of the accommodating cavity, and the other end is correspondingly connected to the transmission shift rocker arm or the shifter shift rocker arm;

[0013] The core wire is passed through the protective tube, and one end thereof extends out of the protective tube and is connected to the corresponding piston, and the other end thereof is correspondingly connected to the transmission shift rocker arm or the shifter shift rocker arm.

[0014] Optionally, it further comprises a guide tube and a core wire connecting rod for connecting the core wire to the corresponding piston;

[0015] The cable is a flexible shaft cable;

[0016] The guide tube is arranged at the end of the mounting frame;

[0017] One end of the core wire connecting rod is slidably arranged in the guide tube and connected to the core wire, and the other end is connected to the piston.

[0018] Optionally, it further comprises a rotating pin, and the core wire connecting rod is rotatably connected to the corresponding piston through the rotating pin;

[0019] The end of the guide tube away from the piston is provided with an outer spherical surface, the mounting frame is provided with a ball socket matched with the outer spherical surface, the guide tube is embedded in the mounting frame, and the outer spherical surface can rotate freely in the ball socket;

[0020] The axial direction of the rotating pin is perpendicular to the axial direction of the guide tube.

[0021] Optionally, it also includes a first sealing ring for sealingly connecting the outer periphery of the piston and the peripheral wall of the accommodating chamber; each piston is provided with a first sealing ring, or is provided with a plurality of first sealing rings distributed at intervals.

[0022] Optionally, the mounting frame includes a first frame, a second frame and an elastic member;

[0023] One end of the first frame and one end of the second frame are sealed and fixed, the other end of the first frame is the first end, the other end of the second frame is the second end, and the inner cavity of the first frame and the inner cavity of the second frame are combined to form the accommodating cavity;

[0024] A mounting plate for connecting to a vehicle body is convexly provided on the outer periphery of the first frame or the second frame;

[0025] The elastic member wraps the mounting plate and is used to close the through hole of the vehicle body through which the gear shift push-pull cable passes.

[0026] Optionally, a first limiting boss is provided on the inner circumferential wall of the first skeleton, and a second limiting boss is provided on the inner circumferential wall of the second skeleton, the first limiting boss is used to limit the terminal position of one of the multiple pistons close to the first end moving toward the second end, and the second limiting boss is used to limit the terminal position of one of the multiple pistons close to the second end moving toward the first end.

[0027] Optionally, it also includes a second sealing ring, a first docking portion is provided at one end of the first skeleton away from the first end, a second docking portion is provided at one end of the second skeleton away from the second end, the first docking portion and the second docking portion are nested with each other, and the second sealing ring is sealingly connected between the first docking portion and the second docking portion.

[0028] Optionally, a notch is provided at the end of the first docking part and / or the second docking part, and a limit platform is correspondingly provided on the second docking part and / or the first docking part. When the first docking part and the second docking part are plugged together, the limit platform is inserted into the notch to limit the relative rotation of the first skeleton and the second skeleton.

[0029] An embodiment of the present invention further provides a car, comprising the above-mentioned shift push-pull cable.

[0030] The shift push-pull cable and automobile provided by the embodiment of the present invention respectively connect the transmission shift rocker arm and the shifter shift rocker arm through two sections of cables, and ensure the synchronization of the movement of the two sections of cables through the hydraulic oil and piston in the accommodating chamber, thereby avoiding the problem of failure to engage the gear due to the asynchronous movement of the two sections of cables; the shift force and shift stroke emitted by the shifter can be transmitted to the transmission through the cable, piston and hydraulic oil, and the vibration energy during the operation of the powertrain can be transmitted to the shifter through the cable, piston and hydraulic oil, thereby realizing two-way transmission of vibration, and due to the compressibility and flow characteristics of the hydraulic oil, high-frequency and low-pair vibrations will be filtered out and converted into liquid heat energy, thereby isolating the transmission of vibration and noise and optimizing the shift feel; at the same time, due to the compressibility of the hydraulic oil, it can play a buffering role, which will change the force and stroke characteristics transmitted by the cable, and can be further optimized by connecting with the rigid shifter mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A partial cross-sectional view of a shift push-pull cable provided in an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A partial enlarged view of the shift push-pull cable shown;

[0033] Figure 3 for Figure 1 A three-dimensional schematic diagram of a first frame and a structure assembled on the first frame;

[0034] Figure 4 for Figure 1 A three-dimensional schematic diagram of the second skeleton in FIG.

[0035] Figure 5 for Figure 1 A three-dimensional schematic diagram of the relevant connection structure between the middle piston and the cable.

[0036] The reference numerals in the specification are as follows:

[0037] 1. Install the frame; 11. Accommodating cavity; 12. Liquid storage cavity;

[0038] 13. first frame; 131. first limiting boss; 132. first docking portion; 1321. notch;

[0039] 14, second frame; 141, second limiting boss; 142, second docking portion; 1421, limiting platform;

[0040] 15. elastic member; 151. lip;

[0041] 16. ball socket; 17. mounting portion;

[0042] 2. Piston;

[0043] 3. Cable; 31. Protective tube; 32. Core wire;

[0044] 4. Guide tube; 41. Outer spherical surface; 5. Core connecting rod; 6. Rotating pin; 7. First sealing ring; 8. Second sealing ring;

[0045] 9. Hydraulic oil. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] like Figure 1 and Figure 2 As shown, the shift push-pull cable provided by the embodiment of the present invention comprises a mounting frame 1, a piston 2 and a cable 3; wherein:

[0048] The mounting frame 1 is provided with a receiving cavity 11;

[0049] A plurality of pistons 2 are slidably disposed in the accommodating chamber 11, and a liquid storage chamber 12 for accommodating the hydraulic oil 9 is isolated in the accommodating chamber 11;

[0050] A section of the cable 3 is passed through the first end of the mounting frame 1, and another section of the cable 3 is passed through the second end of the mounting frame 1;

[0051] One end of the cable 3 passing through the first end is located in the accommodating chamber 11 and connected to one of the multiple pistons 2 close to the first end, and the other end is located outside the accommodating chamber 11 and used to connect to the transmission shift rocker arm;

[0052] One end of the cable 3 passing through the second end is located in the accommodating chamber 11 and connected to one of the multiple pistons 2 close to the second end, and the other end is located outside the accommodating chamber 11 and is used to connect to the shift rocker arm of the shifter.

[0053] When in use, the liquid storage chamber 12 is filled with hydraulic oil 9, and the two sections of the cable 3 are respectively connected to the transmission shift rocker arm and the shifter shift rocker arm;

[0054] During the gear shifting operation, the gear shifting force and gear shifting stroke generated by the gear shifter are transmitted to the piston 2 near the second end through the cable 3 passing through the second end, and then transmitted to the hydraulic oil 9. After the hydraulic oil 9 is compressed to a certain volume, it will push the piston 2 near the first end and the cable 3 passing through the first end to move together, thereby transmitting the force and stroke to the transmission shift rocker arm, thereby achieving the purpose of gear shifting;

[0055] When the powertrain is running, the vibration will be transmitted to the shifter end through the transmission shift rocker arm along the opposite path of the gear shifting operation.

[0056] The shift push-pull cable provided in the embodiment of the present invention is respectively connected to the transmission shift rocker arm and the shifter shift rocker arm through two sections of cables 3, and the synchronization of the movement of the two sections of cables 3 is ensured by the hydraulic oil 9 and the piston 2 in the accommodating chamber 11, thereby avoiding the problem of failure to engage the gear due to the asynchronous movement of the two sections of cables 3; the shift force and shift stroke energy emitted by the shifter can be transmitted to the transmission through the cable 3, the piston 2 and the hydraulic oil 9, and the vibration energy during the operation of the powertrain can be transmitted to the shifter through the cable 3, the piston 2 and the hydraulic oil 9, thereby realizing the two-way transmission of vibration, and due to the compressibility and flow characteristics of the hydraulic oil 9, the high-frequency and low-pair vibrations will be filtered out and converted into the heat energy of the hydraulic oil, thereby isolating the transmission of vibration and noise and optimizing the shift feel; at the same time, due to the compressibility of the hydraulic oil 9, it can play a buffering role, which will change the force and stroke characteristics transmitted by the cable 3, and by connecting with the rigid shifter mechanism, the shift feel can be further optimized.

[0057] In one embodiment, if Figure 1 As shown, the cable 3 includes a protective tube 31 and a core wire 32;

[0058] One end of the protective tube 31 is arranged at the corresponding end of the mounting frame 1 and connected to the cavity wall of the accommodating cavity 11, and the other end is correspondingly connected to the transmission shift rocker arm or the shifter shift rocker arm;

[0059] The core wire 32 is passed through the protective tube 31 , and one end of the core wire 32 extends out of the protective tube 31 and is connected to the corresponding piston 2 , and the other end of the core wire 32 is correspondingly connected to the transmission shift rocker arm or the shifter shift rocker arm.

[0060] The cable 3 realizes power transmission through the core wire 32. The protective tube 31 not only protects the core wire 32, but also isolates the accommodating chamber 11 from the outside world to prevent the intrusion of impurities, thereby ensuring the working reliability of the shift push-pull cable.

[0061] Specifically, the protective tube 31 is inserted into the cylindrical hole at the end of the mounting frame 1 .

[0062] In one embodiment, if Figure 1 and Figure 2 As shown, it also includes a guide tube 4 and a core wire connecting rod 5 for connecting the core wire 32 to the corresponding piston 2;

[0063] The cable 3 is a flexible shaft type cable 3;

[0064] The guide tube 4 is arranged at the end of the mounting frame 1;

[0065] One end of the core wire connecting rod 5 is slidably disposed in the guide tube 4 and connected to the core wire 32, and the other end is connected to the piston 2;

[0066] Among them, the flexible shaft type cable 3 is an existing structure, and the protective tube 31 and the core wire 32 of the cable 3 have a certain deformation ability, which will not be described in detail here.

[0067] The core wire 32 is limited by the guide tube 4 and the core wire connecting rod 5 to prevent the core wire 32 from bending or expanding to affect the transmission of the shifting force and the shifting stroke.

[0068] Of course, the guide tube 4 and the core wire connecting rod 5 may not be provided, and the core wire 32 may be limited by other means, such as:

[0069] Not shown, a section of the core wire and the protective tube close to the piston is set as a hard section. Since the core wire slides relative to the protective tube under force, a longer hard section of the protective tube is required to match the hard section of the core wire.

[0070] Specifically, the core wire 32 and the core wire connecting rod 5 may be fixedly connected by riveting.

[0071] In one embodiment, if Figure 1 , Figure 2 and Figure 5 As shown, it also includes a rotating pin 6, and the core wire connecting rod 5 is rotatably connected to the corresponding piston 2 through the rotating pin 6;

[0072] An outer spherical surface 41 is provided at one end of the guide tube 4 away from the piston 2, and a ball socket 16 matching the outer spherical surface 41 is provided on the mounting frame 1. The guide tube 4 is embedded in the mounting frame 1, and the outer spherical surface 41 can rotate freely in the ball socket 16;

[0073] The axial direction of the rotating pin 6 is perpendicular to the axial direction of the guide tube 4. In this way, the guide tube 4 and the core wire connecting rod 5 have rotational freedom, and the axis of each guide tube 4 and each core wire connecting rod 5 can be corrected to avoid affecting the coaxiality due to processing errors.

[0074] In one embodiment, if Figure 1 , Figure 2 and Figure 5 As shown, it also includes a first sealing ring 7 for sealingly connecting the outer periphery of the piston 2 and the peripheral wall of the accommodating chamber 11; each piston 2 is provided with a first sealing ring 7, or is provided with a plurality of first sealing rings 7 distributed at intervals. The first sealing ring 7 ensures the sealing between the piston 2 and the peripheral wall of the accommodating chamber 11, and providing a plurality of first sealing rings 7 is conducive to improving the sealing.

[0075] Preferably, two first sealing rings 7 are provided on each piston 2, and the structure is relatively simple. The inner sealing ring plays a primary sealing role, and the outer sealing ring plays a secondary sealing role to prevent the hydraulic oil 9 from leaking out. The outer sealing ring also plays a role in blocking the entry of impurities.

[0076] In one embodiment, if Figure 1 , Figure 3 and Figure 4 As shown, the installation frame 1 includes a first frame 13, a second frame 14 and an elastic member 15;

[0077] One end of the first frame 13 and one end of the second frame 14 are sealed and fixed, the other end of the first frame 13 is the first end, the other end of the second frame 14 is the second end, and the inner cavity of the first frame 13 and the inner cavity of the second frame 14 are combined to form the accommodating cavity 11;

[0078] A mounting plate for connecting to the vehicle body is convexly provided on the outer periphery of the first frame 13 or the second frame 14;

[0079] The elastic member 15 wraps the mounting plate and is used to close the through hole of the vehicle body for the shift push-pull cable to pass through. Specifically, the elastic member 15 closes the through hole of the vehicle body for the shift push-pull cable to pass through through the lip 151 thereon.

[0080] The first skeleton 13 and the second skeleton 14 enclose a circumferentially closed sealed cavity, namely the accommodating cavity 11, in which all moving and active parts (such as the wire core end, the guide tube 4, the core wire connecting rod 5, the rotating pin 6 and the piston 2, etc.) are arranged, which effectively prevents the intrusion of foreign impurities such as dust and water from the outside, and ensures the working reliability of the mechanism; the mounting plate wrapped with the elastic member 15 can be approximately regarded as a rigid fixing member, which is used to connect the vehicle body to realize the installation and fixation of the shift push-pull cable on the vehicle body. At the same time, the elastic member 15 can also appropriately reduce the vibration and noise transmitted through the protective tube 31.

[0081] Specifically, the mounting plate is a triangular plate, which is used to connect the vehicle body and also plays a role in supporting the elastic member 15 .

[0082] Specifically, the elastic member 15 is a rubber member, which is vulcanized and connected to the outer periphery of the mounting frame 1 .

[0083] Preferably, the first frame 13 and the second frame 14 are split structures to facilitate the assembly of the internal structure. After the internal structure is assembled, the first frame 13 and the second frame 14 are sealed and connected.

[0084] In one embodiment, if Figure 1 and Figure 2 As shown, a first limiting boss 131 is provided on the inner circumferential wall of the first skeleton 13, and a second limiting boss 141 is provided on the inner circumferential wall of the second skeleton 14. The first limiting boss 131 is used to limit the terminal position of one of the multiple pistons 2 close to the first end moving toward the second end, and the second limiting boss 141 is used to limit the terminal position of one of the multiple pistons 2 close to the second end moving toward the first end. The first limiting boss 131 and the second limiting boss 141 limit the stroke transmitted by the core wire 32 to avoid over-stroke operation and damage to the hydraulic plunger structure.

[0085] In one embodiment, if Figure 1 and Figure 2 As shown, the second sealing ring 8 is also included. The end of the first frame 13 away from the first end is provided with a first docking portion 132, and the end of the second frame 14 away from the second end is provided with a second docking portion 142. The first docking portion 132 and the second docking portion 142 are nested with each other, and the second sealing ring 8 is sealed and connected between the first docking portion 132 and the second docking portion 142. It is convenient to connect the first frame 13 and the second frame 14, and can ensure the sealing between the two to avoid leakage of the hydraulic oil 9. At the same time, the second sealing ring 8 also ensures that there is a certain pressure between the first docking portion 132 and the second docking portion 142.

[0086] In one embodiment, if Figure 1 and Figure 2 As shown, a notch 1321 may be provided at the end of the first docking portion 132 or the second docking portion 142, and a limiting platform 1421 may be provided on the second docking portion 142 or the first docking portion 132 accordingly. When the first docking portion 132 and the second docking portion 142 are plugged in, the limiting platform 1421 is inserted into the notch 1321 to limit the relative rotation of the first frame 13 and the second frame 14. This is beneficial to improving the bearing capacity of the connection between the first frame 13 and the second frame 14, and preventing the first frame 13 and the second frame 14 from rotating relative to each other and damaging the fixed connection between the first frame 13 and the second frame 14.

[0087] Preferably, the first frame 13 and the second frame 14 are ultrasonically welded together. At this time, the limit platform 1421 and the wall of the notch 1321 form a bent welding line, which increases the welding area and further improves the bearing capacity of the connection between the first frame 13 and the second frame 14, thereby preventing the first frame 13 and the second frame 14 from rotating relative to each other or slipping axially to destroy the fixed connection between the first frame 13 and the second frame 14.

[0088] An embodiment of the present invention further provides a vehicle, comprising the shift push-pull cable described in any of the aforementioned embodiments.

[0089] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shift push-pull cable, comprising a mounting frame, characterized in that: Also includes pistons and cables; The installation frame is provided with a receiving cavity; A plurality of pistons are slidably disposed in the accommodating cavity, and a liquid storage cavity for accommodating hydraulic oil is isolated in the accommodating cavity; One section of the cable is passed through the first end of the mounting frame, and another section of the cable is passed through the second end of the mounting frame; One end of the cable passing through the first end is located in the accommodating cavity and connected to one of the plurality of pistons close to the first end, and the other end is located outside the accommodating cavity and used to connect to a transmission shift rocker arm; One end of the cable passing through the second end is located in the accommodating cavity and connected to one of the plurality of pistons close to the second end, and the other end is located outside the accommodating cavity and used to connect to the shift rocker arm of the shifter; The cable comprises a core wire, one end of which is connected to the corresponding piston, and the other end of which is connected to the transmission shift rocker arm or the shifter shift rocker arm; Also included is a guide tube, and a core wire connecting rod for connecting the core wire to the corresponding piston; The guide tube is arranged at the end of the mounting frame; One end of the core wire connecting rod is slidably disposed in the guide tube and connected to the core wire, and the other end is connected to the piston; It also includes a rotating pin, through which the core wire connecting rod is rotatably connected to the corresponding piston; The axial direction of the rotating pin is perpendicular to the axial direction of the guide tube; The guide tube, the core wire connecting rod and the rotating pin are arranged in the accommodating cavity; The installation frame includes a first frame and a second frame, one end of the first frame and one end of the second frame are sealed and fixed, and the inner cavity of the first frame and the inner cavity of the second frame are combined to form the accommodating cavity.

2. The shift push-pull cable according to claim 1, characterized in that: The cable also includes a protective tube; One end of the protective tube is arranged at the corresponding end of the mounting frame and connected to the cavity wall of the accommodating cavity, and the other end is correspondingly connected to the transmission shift rocker arm or the shifter shift rocker arm; The core wire is inserted into the protective tube, and one end of the core wire used for connecting with the corresponding piston extends out of the protective tube.

3. The shift push-pull cable according to claim 2, characterized in that: The cable is a flexible shaft cable.

4. The shift push-pull cable according to claim 3, characterized in that: An end of the guide tube away from the piston is provided with an outer spherical surface, a ball socket matched with the outer spherical surface is provided on the mounting frame, the guide tube is embedded in the mounting frame, and the outer spherical surface can rotate freely in the ball socket.

5. The shift push-pull cable according to claim 1, characterized in that: It also includes a first sealing ring for sealingly connecting the outer periphery of the piston and the peripheral wall of the accommodating chamber; each piston is provided with a first sealing ring, or is provided with a plurality of first sealing rings distributed at intervals.

6. The shift push-pull cable according to claim 1, characterized in that: The mounting frame also includes an elastic member; The other end of the first frame is the first end, the other end of the second frame is the second end, and a mounting plate for connecting to a vehicle body is convexly provided on the outer periphery of the first frame or the second frame; The elastic member wraps the mounting plate and is used to close the through hole of the vehicle body through which the gear shift push-pull cable passes.

7. The shift push-pull cable according to claim 6, characterized in that: A first limiting boss is provided on the inner circumferential wall of the first skeleton, and a second limiting boss is provided on the inner circumferential wall of the second skeleton. The first limiting boss is used to limit the terminal position of one of the multiple pistons close to the first end moving toward the second end, and the second limiting boss is used to limit the terminal position of one of the multiple pistons close to the second end moving toward the first end.

8. The shift push-pull cable according to claim 6, characterized in that: It also includes a second sealing ring. A first docking portion is provided at one end of the first skeleton away from the first end, and a second docking portion is provided at one end of the second skeleton away from the second end. The first docking portion and the second docking portion are nested with each other, and the second sealing ring is sealingly connected between the first docking portion and the second docking portion.

9. The shift push-pull cable according to claim 8, characterized in that: A notch is provided at the end of the first docking part and / or the second docking part, and a limit platform is correspondingly provided on the second docking part and / or the first docking part. When the first docking part and the second docking part are plugged in, the limit platform is inserted into the notch to limit the relative rotation of the first frame and the second frame.

10. An automobile, characterized in that: The invention comprises the shift push-pull cable as described in any one of claims 1 to 9.

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